title: False-negative results of Hemoccult test in colorectal cancer.
mesh_terms: D003110:Colonic Neoplasms / Q000175:diagnosis*; D005188:False Negative Reactions; D005243:Feces / Q000032:analysis; D006801:Humans; D009364:Neoplasm Recurrence, Local; D009780:Occult Blood; D011446:Prospective Studies; D011933:Reagent Kits, Diagnostic; D012004:Rectal Neoplasms / Q000175:diagnosis*
chemical_list: D011933:Reagent Kits, Diagnostic